<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2015, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package    CodeIgniter
 * @author    EllisLab Dev Team
 * @copyright    Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
 * @copyright    Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
 * @license    http://opensource.org/licenses/MIT    MIT License
 * @link    http://codeigniter.com
 * @since    Version 1.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * CodeIgniter Number Helpers
 *
 * @package        CodeIgniter
 * @subpackage    Helpers
 * @category    Helpers
 * @author        EllisLab Dev Team
 * @link        http://codeigniter.com/user_guide/helpers/number_helper.html
 */

// ------------------------------------------------------------------------

if ( ! function_exists('byte_format'))
{
    /**
     * Formats a numbers as bytes, based on size, and adds the appropriate suffix
     *
     * @param    mixed    will be cast as int
     * @param    int
     * @return    string
     */
    function byte_format($num, $precision = 1)
    {
        $CI =& get_instance();
        $CI->lang->load('number');

        if ($num >= 1000000000000)
        {
            $num = round($num / 1099511627776, $precision);
            $unit = $CI->lang->line('terabyte_abbr');
        }
        elseif ($num >= 1000000000)
        {
            $num = round($num / 1073741824, $precision);
            $unit = $CI->lang->line('gigabyte_abbr');
        }
        elseif ($num >= 1000000)
        {
            $num = round($num / 1048576, $precision);
            $unit = $CI->lang->line('megabyte_abbr');
        }
        elseif ($num >= 1000)
        {
            $num = round($num / 1024, $precision);
            $unit = $CI->lang->line('kilobyte_abbr');
        }
        else
        {
            $unit = $CI->lang->line('bytes');
            return number_format($num).' '.$unit;
        }

        return number_format($num, $precision).' '.$unit;
    }
}
